Tom Heathcote, centre, played for England at the Junior World Championship but is eligible for selection by Scotland. Photograph: Paul Thomas/Action Images

The England Under-20 international Tom Heathcote has joined the Scotland squad for the Test against Tonga.

The Bath fly-half played for England in the IRB Junior World Championship this summer but was born in Inverness. The 20-year-old, who has Heineken Cup experience with Bath, came in after Ruaridh Jackson was five players released from the squad.

Heathcote said: "I am delighted to be called up to the Scotland squad. I've always known I was eligible to play for Scotland and I'm grateful to be given this opportunity."

Scotland's head coach, Andy Robinson, said: "Tom has worked his way into the Bath first-team squad from the academy and we've been monitoring his progress for the last couple of years."

Jackson was the only released player who featured in Saturday's 21-10 defeat by South Africa. The No10 will prepare for Glasgow's match with Leinster on Friday along with Alex Dunbar and Tom Ryder.

Robinson will name his team on Wednesday as Scotland look to bounce back from defeats by South Africa and New Zealand.